表面

European Cassini spacecraft flew within 310 miles (500 kilometers) of the Dione's pale surface last week, showing it possessed a heavily cratered surface but no presence of an atmosphere.

上周美国－欧洲的卡西尼太空船飞离土卫四的苍白色表面310英里（500公里），显示它的表面有一个巨大的坑，并且没有大气的存在。

The present studies showed that two cell populations were found in haemocytes: large cell with high granularity and small cell with low granularity by flow cytometry FCM on light scanttering pattern. Two distinct cell types were identified based on phase contrast microscope: one type of cell was dark and dioptric aberration, while the other was bright and dioptric strong. By Giemsa and H.E staining, cytoplasmic staining were heterogeneous and internal particles were obvious in one type of cell, while cytoplastic staining were homogeneous and internal particles were inexistent in the other type of cell. By transmission electron microscope, we found that the mitochondria, Golgi apparatus organelles were rich and internal particles were obvious in one type of cells, and contrary to the another cells.

流式细胞术光散射图谱显示血细胞被分两类，一类为颗粒度高的大细胞，另外一类为颗粒度低的小细胞；相差显微镜观察显示，血细胞可分为胞体暗、折光性差和胞体明亮、折光性强的两类； Giemsa和H.E染色显示细胞分为胞质染色不均一、胞内颗粒明显和胞质染色均一、胞内颗粒不明显的两类；透射电镜超薄切片观察显示，颗粒明显的细胞胞质内线粒体、高尔基体等细胞器较丰富，颗粒不明显的细胞胞质内细胞器较少；负染结果表明血细胞主要分为表面不光滑、突起明显和细胞表面光滑、突起较不明显的两类。

Silver nanowires with clean surface were synthesized via the redox reaction between Sodium diphenylamine sulfonate and AgNO in the absence of surfactant, seed, and nanoporous membrane and at room temperature for the first time.

首次在室温，和不用表面活性剂、无机硬模板、晶种的条件下，通过二苯胺磺酸钠和硝酸银的氧化还原反应，制备了表面洁净的银纳米线。

RESULTS: ADMSCs at passage 3 were positive for CD13, CD59 and CD44, but negative for CD34 and HLA-DR. Chromosomal morphous, structure and number were normal, showing diplont structure. Under the microscope, there were complete Golgi complex, plenty of rough endoplasmic reticulum, and some glycogen granules in cytoplasm.

结果：第3代脂肪间充质干细胞CD13，CD44，CD59均呈阳性表达，而造血干细胞表面标志CD34及成纤维细胞表面标志HLA-DR均呈阴性表达；染色体的形态、结构和数目均未见异常，呈二倍体结构；镜下可见完整的高尔基复合体，数量较多的粗面内质网，部分糖元颗粒分布在胞浆中。

This paper introduces some fundamental principles of the Fused Deposition Modeling in Rapid Prototyping, and analyzes the factors influencing the prototype surface quality from two parts, which include the choice of prototyping direction and the prototyping parameter. Based on this, in response to these common quality problems in Fused Deposition Modeling prototyping, this paper puts forward some methods to improve quality.

介绍了快速成型技术中熔融沉积制造的基本原理，从成型方向的选择和成型参数两方面分析了影响原型表面质量的因素，并针对熔融沉积制造原型常见的表面质量问题，提出了改善质量的措施。

The simulation results of smooth metal surface with roughness of 1.6 μm accord with the experimental data very well, but the simulation results of rough metal surface with roughness of 6.8 μm disaccord with the experimental data.

对于表面粗糙度为6.8 μm的较为粗糙的金属表面，仿真出的结果和实验中获得的数据相差较大。

The variation of particle size in dispersed phase was determined by the changeable value of interface tension.

本文认为，两相之间的界面张力是影响分散体系最终结果的内在因素，界面张力的变化从根本上决定着分散体系中分散相粒子的大小；表面活性剂分子在界面上的排列方式是影响界面张力的主要因素；临界胶束浓度CMC是决定界面上表面活性剂分子排列情况的定量判据。

We studied the structure of the oxide dispersed on support.

对这些表面分散体系的表面结构进行了研究。

Especially the most commonly used methods,such as coupling reagent,surfactant and polymer coating methods were introduced in detail.On these basis,the problems existed were put forwarded and the necessity of interface compatibility improvement,the uniform dispersedness of nano-particles in base material and stability control were pointed out.At the same time,further research direction was also proposed.

未经表面处理的纳米TiO2颗粒表面还具有亲水性，不能很好地分散在有机基质中，这大大降低了超细颗粒的实际应用效果；同时在有机高分子树脂中难以均匀分散，界面上会出现空隙，当空气中的水分进入空隙中就会引起界面高聚物的降解、脆化，导致材料性能下降。

The influence of pH value and surface surfactant coating on the dispersibility and stability of water-based Fe3O4 magnetic fluid was also studied.

制备了水基Fe3O4铁氧体磁流体，研究了载液pH值、表面活性剂包覆等对磁流体分散性及稳定性的影响以及纳米颗粒与表面活性剂之间的结合。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。